Top Quark Modelling and Tuning at CMS

Abstract

Recent measurements dedicated to improving the understanding of modelling top quark pair ($\text{t}\overline{\text{t}}$) production at the LHC are summarised. These measurements, performed with proton-proton collision data collected by the CMS detector at $\sqrt{s}=$ 13 TeV, probe the underlying event in $\text{t}\overline{\text{t}}$ events, and use the abundance of jets in $\text{t}\overline{\text{t}}$ events to study the substructure of jets. A new set of tunes for PYTHIA 8, and their performance with $\text{t}\overline{\text{t}}$ data, are also discussed.

Proceedings for the 11th International Workshop on Top Quark Physics (TOP2018)